Relay has this feature for Reddit. In a thread, if you tap the comment icon on top all the comments will be collapsed except the top level ones. I personally use this on pretty much every single thread. It makes scrolling through a thread much less cluttered and its reads a lot nicer.
I also like that there if you collapse a comment thread, the top comment stays visible. Here it is hidden which doesn't add too much value in my opinion. As long as all the child comments are collapsed the top one could stay visible imo.
Other than that I really like the app so far. Keep up the good work!
Edit: btw I said button but if there would be some other way to do it that would also work.
People here are all saying rich or trustfund or something. But in my experience people who do that are often still young and living with their parents, which allows them to save a lot of money and have no rent to pay.
And where I'm from many of them travel to backpack countries like Thailand or Indonesia. Plane tickets to those countries are not cheap but once you're there you can live really cheap if you want to. You can get pretty decent hotels for 10-20 euros a night in those countries (can be even cheaper if you're willing to sleep in hostels. And food and activities can also be really cheap. So if you save up a couple thousand bucks you can live/travel in these kinds of countries for quite a while.